The Salvation Army Canada & Bermuda Music & Gospel Arts alliance host a variety of resources. Training in brass, vocal, theory, and contemporary music team/worship leading.
Worship Central is an Alpha-style program that is particularly useful for local teams to do together, as a devotional or team time. It is free to use when you register your group for the program and has 7 sessions that can be spread over a term of rehearsal nights, or condensed into a weekend/retreat. The format is more discussion-based than practical though some topics explore practical areas. It is international/interdenominational and originally from the UK: https://worshipcentral.org/the-course
Musicademy is an excellent site for practical contemporary music training and DIY team upskilling. It hosts some free resources and gives the option of either paying per product downloads or signing up to their subscription model for training materials. It is very practically focused and deliberately targeted at the average church worship team. Developed by UK contemporary worship experts and is multidenominational: https://www.musicademy.com/
Many of their free videos and guides can also be found on their YouTube channel - subscribe for updates!
Worship Artistry is a practical site focusing mainly on 5 instrumental areas: keyboard, acoustic guitar, electric guitar, bass guitar, drums; and vocal. Free access to their Greenroom (blog & article access) and subscription for progressive training and more tutorial access. US-based: https://worshipartistry.com/
They also provide many of their entry level/'101' training videos on their YouTube channel, along with easy to follow tutorials for many recent contemporary worship releases - subscribe to get all their new material.
Worship Training is the worship education arm of the Praise Charts family of websites. It is international and interdenominational, with teaching from a wide range of experts including N.T. Wright, Dan Wilt, Andy Park, Don Moen and many more.
It has limited free access and resources but offers excellent quality training via subscriptions, with individual and team plans available: https://www.worshiptraining.com/